Update 'README.md'

README.md

@@ -25,4 +25,8 @@ python main.py
 
 ## License
 
-Licensed under the [Apache 2.0](LICENSE) © [liuyuqi.gov@msn.cn](https://github.com/jianboy)
+Licensed under the [Apache 2.0](LICENSE) © [liuyuqi.gov@msn.cn](https://github.com/jianboy)
+
+## Reference
+
+barrier deskflow sharemouse